The index lost 0.15 point, or 0.43%, to close at 34.41. The gauge started with given mark of 100 on June 24, 2009 but it has never been back to that level.
The market volume plunged to 216,807 shares traded for VND0.74 billion as investors stayed cautious.
The market breadth was negative with 9 gainers, 13 losers, 5 unmoved and the rest untraded.
SDK was the biggest gainer, adding VND500 to finish at VND11,000 with 5,400 shares traded.
MEF was the biggest loser, falling VND1,100 to close at VND11,800 on trade of 100 units.
FBA was the most active stock today with 69,500 shares traded closing up VND100 to VND2,700.
Foreign investors stayed on the sidelines today.